Multi-metal ions co-regulated vanadium oxide cathode toward long-life aqueous zinc-ion batteries

Ming-Yang Ma; Yan Liu; Jia-Lin Yang; Shu-Ying Li; Miao Du; Dai-Huo Liu; Ze-Lin Hao; Jin-Zhi Guo; Xing-Long Wu

doi:10.1016/j.jcis.2024.05.065

Multi-metal ions co-regulated vanadium oxide cathode toward long-life aqueous zinc-ion batteries

J Colloid Interface Sci. 2024 Sep 15:670:174-181. doi: 10.1016/j.jcis.2024.05.065. Epub 2024 May 10.

Authors

Ming-Yang Ma¹, Yan Liu¹, Jia-Lin Yang¹, Shu-Ying Li², Miao Du¹, Dai-Huo Liu³, Ze-Lin Hao², Jin-Zhi Guo⁴, Xing-Long Wu⁵

Affiliations

¹ MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, Jilin 130024 PR China.
² Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024 PR China.
³ MOE Key Laboratory of Green Chemical Media and Reactions, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007 PR China.
⁴ MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, Jilin 130024 PR China. Electronic address: guojz065@nenu.edu.cn.
⁵ MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, Jilin 130024 PR China; Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024 PR China. Electronic address: xinglong@nenu.edu.cn.

PMID: 38761570
DOI: 10.1016/j.jcis.2024.05.065

Abstract

Interlayer intercalation engineering shows great feasibility to improve the structure stability of the layered oxides. Although high Zn-storage capability has been attained based on the pillar effect of multifarious intercalants, an in-depth understanding the synergistic effect of intercalated multiple metal ions is still in deficiency. Herein, alkali metal ion K⁺, alkaline earth metal ion Mg²⁺ and trivalent metal ion Al³⁺ are introduced into the VO interlayer of V₂O₅. Due to the different electronegativity and hydrated ion radius of K⁺, Mg²⁺ and Al³⁺, adjusting the relative proportions of these metal ions can achieve an appropriate interlayer spacing, stable layer structure and regular morphology, which facilitates the transport kinetics of Zn²⁺. Under the synergistic effect of pre-intercalated multi-metal ion, the optimal tri-metal ion intercalated hydrated V₂O₅ cathode exhibits a high specific capacity of 382.4 mAh g^-1 at 0.5 A g^-¹, and long-term cycling stability with capacity retention of 86 % after 2000 cycles at the high current density of 10 A g^-1. Ex-situ and kinetic characterizations reveal the fast charge transfer and reversible Zn²⁺ intercalation mechanism. The multi-ion engineering strategy provides an effective way to design desirable layered cathode materials for aqueous zinc-ion batteries.

Keywords: Aqueous zinc-ion batteries; Interlayer spacing; Multi-ion engineering strategy; Synergistic effect; Vanadium oxide.